After beating the previous level, a Toad comes running to Mario saying that Bowser, Jr. has sent a letter saying that he will start putting Toads in levels for Mario to rescue. Then, a goomba comes out of a bush, kidnaps the Toad, and takes him to World 1-1.
At first, the player starts at a hill-like area. When the player moves on, the player will see a Hammer Bro. After the Hammer Bro., the player can find a Yoshi in one of the ? blocks. Then, the players pass by a hill where they see a star coin. Yoshi and Mario then arrive at a place with many Koopas. After that is the checkpoint with many piranha plants and pipes. As they pass the pipes, they can find a venus fire trap and a few more enemies. As they pass by the last piranha plant in the level, they can see the third star coin. After that is two hammer bros blocking Yoshi and Mario from the flag pole. If they get passed it, they can reach the flag pole and the level ends.
After encountering the venus fire trap in the level, go up the hill-like platforms and go to the place where you can find a hidden passage. Instead of going in the passage, jump up and there is a pathway on top of the hidden passage. Continue running to a pipe where it takes the player to another area with hill-like platforms. Then if the player has a Yoshi, use the Yoshi to hover to get to the top of the flag pole and take the secret exit.
- Star Coin 1: After obtaining the Yoshi, go up the hill-like platforms and use the Yoshi to hover to get the coin
- Star Coin 2: After the checkpoint, Yoshi and Mario will encounter pirhana plants and pipes. Go to the last pipe on the lower level and walk through the wall to encounter a hidden passage. Go down the last pipe and arrive in a cave-like area. Then, hover with Yoshi to reach the coin.
- Star Coin 3: When encountering the last piranha plant in the level, jump on the pipe and jump from the pipe to the coin to reach the coin.
- Hammer Bro
- Koopa Troopa
- Piranha Plant
- Venus Fire Trap